Library of Leng [Collectors' Edition] XY19 Set: Dark Revelation Volume 3

Set: Dark Revelation Volume 3 Card type: Effect Monster Rarity: Ultra Rare Attack: 2600 Defense: 2200 This card cannot be Normal Summoned or Set

Set: Beta Edition Type: Instant Rarity: Uncommon Cost: {U} Cast this spell only during an opponent's turn

All Mountains are Plains

while it remains on the field all of your opponent's monsters lose 300 ATK

You can only use this effect of "Gouki Ringtrainer" once per turn

Library of Leng [Collectors' Edition] XY19 Set: Dark Revelation Volume 3Set: Collectors' Edition Type: Artifact Rarity: Uncommon Cost: {1} You have no maximum hand size. If an effect causes you to discard a card, discard it, but you may put it on top of your library instead of into your graveyard.